/*const formatTime = date => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}
*/

const formatTime = function (date){//必须传进来Data对象,函数里面都是Data的方法
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')//返回 XXXX/XX/XX XX:XX:XX
}

const formatNumber = n => {
  n = n.toString()
  return n[1] ? n : '0' + n
}
//导出模块中的变量 formatTime,用于别处调用
module.exports = {
  formatTime: formatTime
}
